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安规问题集锦：1、标志不当：a.fusemarkingb.powerswitchsymbolc.protectiveearthsymbold.PEwirecolor2.安全说明：a.Motltipowersupplysystemb.protectiveearthconnectioninstructionc.Hightouchcurrentwarninglabeld.Hazardousvoltage3.绝缘距离：a.10Nforcerequirementforallpartsb.misunderstandbulkcapacitor'sinsulationspecificationsc.Illassemblyd.misunderstandfanwire'sinsulationfeaturee.transformerconstructionfail:margintapewidthandturnsofinsulationtape4.资料和元器件：a.certificateoutofvalidityb.misusecomponentcertificate:ULandEuropeanstandardsdifferentc.misssafetycriticalcomponentsinCDF:dischargeresistorsandbulkcapacitord.misunderstandtherequirementsforsafetycriticalcomponents:notallsafetycriticalcomponentsneedcertificatee.misunderstandcomponents5.安规测试:a.Hi-potfail,especiallyafter48hours'humiditytreatmentb.Touchcurrentfailc.Outputoverloadfail:temp.exceededsafetylimitd.Componentfaultsimulation:temp.ontransformerandoutputvoltageexceededsafetylimit6.设计更改和生产一致性:a.Non-conformancebetweencertificationandproductionb.Labelformat7.PCBLayout图提供不对，只提供了器件装配图，没有走线图。Royce_wang@yahoo.com.cn